go.toolchain.rev: update to Go 1.20rc3

Updates #7123

Change-Id: Ibdf53530251c120e7e20c24abcf4a05f2ff7ac97
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

cmd/tsconnect/common.go

@@ -234,7 +234,7 @@ func runWasmOpt(path string) error {
 		return fmt.Errorf("Cannot stat %v: %w", path, err)
 	}
 	startSize := stat.Size()
-	cmd := exec.Command("../../tool/wasm-opt", "-Oz", path, "-o", path)
+	cmd := exec.Command("../../tool/wasm-opt", "--enable-bulk-memory", "-Oz", path, "-o", path)
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	err = cmd.Run()

go.toolchain.rev

@@ -1 +1 @@
-dc0ce6324d19b7539e8efebc64c94631615fd80a
+6a17f14c058e230cc620b72cf80099c2aa7f7335

tool/binaryen.rev

@@ -1 +1 @@
-110
+111